This topic has not yet been rated - Rate this topic

SerializationInfo.GetValue Method

Retrieves a value from the SerializationInfo store.

Namespace:  System.Runtime.Serialization
Assembly:  mscorlib (in mscorlib.dll)
public Object GetValue(
	string name,
	Type type
)

Parameters

name
Type: System.String
The name associated with the value to retrieve.
type
Type: System.Type
The Type of the value to retrieve. If the stored value cannot be converted to this type, the system will throw a InvalidCastException.

Return Value

Type: System.Object
The object of the specified Type associated with name.
ExceptionCondition
ArgumentNullException

name or type is null.

InvalidCastException

The value associated with name cannot be converted to type.

SerializationException

An element with the specified name is not found in the current instance.

If the data stored in the SerializationInfo is of the type requested (or one of its derived classes), that value is returned directly. Otherwise, IFormatterConverter.Convert is called to convert it to the appropriate type.

The value returned by the GetValue method can always be safely cast to the type specified in the type parameter.

The following code example demonstrates the use of the GetValue method:


// A serializable LinkedList example.  For the full LinkedList implementation
// see the Serialization sample.
[Serializable()]
class LinkedList: ISerializable {

   public static void Main() {}

   Node m_head = null;
   Node m_tail = null;

   // Serializes the object.
   [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter=true)]
   public void GetObjectData(SerializationInfo info, StreamingContext context){
      // Stores the m_head and m_tail references in the SerializationInfo info.
      info.AddValue("head", m_head, m_head.GetType());
      info.AddValue("tail", m_tail, m_tail.GetType());
   }

   // Constructor that is called automatically during deserialization.
   // Reconstructs the object from the information in SerializationInfo info
   [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter=true)]
   private LinkedList(SerializationInfo info, StreamingContext context)
   {      
      Node temp = new Node(0);
      // Retrieves the values of Type temp.GetType() from SerializationInfo info
      m_head = (Node)info.GetValue("head", temp.GetType());
      m_tail = (Node)info.GetValue("tail", temp.GetType());
   }
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.